diff --git a/webui/package-lock.json b/webui/package-lock.json
index cd6b0ea..7e5610c 100644
--- a/webui/package-lock.json
+++ b/webui/package-lock.json
@@ -31,7 +31,6 @@
         "@testing-library/jest-dom": "^6.9.1",
         "@testing-library/react": "^16.3.0",
         "@testing-library/user-event": "^14.6.1",
-        "@types/eslint__js": "^9.14.0",
         "@types/node": "^24.10.1",
         "@types/react": "^19.2.4",
         "@types/react-dom": "^19.2.3",
@@ -2557,17 +2556,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@types/eslint__js": {
-      "version": "9.14.0",
-      "resolved": "https://registry.npmjs.org/@types/eslint__js/-/eslint__js-9.14.0.tgz",
-      "integrity": "sha512-s0jepCjOJWB/GKcuba4jISaVpBudw3ClXJ3fUK4tugChUMQsp6kSwuA8Dcx6wFd/JsJqcY8n4rEpa5RTHs5ypA==",
-      "deprecated": "This is a stub types definition. @eslint/js provides its own type definitions, so you do not need this installed.",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@eslint/js": "*"
-      }
-    },
     "node_modules/@types/estree": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",
diff --git a/webui/package.json b/webui/package.json
index a66e024..ca4fa6f 100644
--- a/webui/package.json
+++ b/webui/package.json
@@ -40,7 +40,6 @@
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.0",
     "@testing-library/user-event": "^14.6.1",
-    "@types/eslint__js": "^9.14.0",
     "@types/node": "^24.10.1",
     "@types/react": "^19.2.4",
     "@types/react-dom": "^19.2.3",
diff --git a/webui/src/components/instance/AutoRestartConfiguration.tsx b/webui/src/components/instance/AutoRestartConfiguration.tsx
index fe3a900..bb40b7d 100644
--- a/webui/src/components/instance/AutoRestartConfiguration.tsx
+++ b/webui/src/components/instance/AutoRestartConfiguration.tsx
@@ -5,7 +5,7 @@ import NumberInput from '@/components/form/NumberInput'
 
 interface AutoRestartConfigurationProps {
   formData: CreateInstanceOptions
-  onChange: (key: keyof CreateInstanceOptions, value: any) => void
+  onChange: <K extends keyof CreateInstanceOptions>(key: K, value: CreateInstanceOptions[K]) => void
 }
 
 const AutoRestartConfiguration: React.FC<AutoRestartConfigurationProps> = ({
diff --git a/webui/src/components/instance/BackendConfiguration.tsx b/webui/src/components/instance/BackendConfiguration.tsx
index 8f10e41..064bbcb 100644
--- a/webui/src/components/instance/BackendConfiguration.tsx
+++ b/webui/src/components/instance/BackendConfiguration.tsx
@@ -3,9 +3,11 @@ import type { CreateInstanceOptions } from '@/types/instance'
 import { getBasicBackendFields, getAdvancedBackendFields } from '@/lib/zodFormUtils'
 import BackendFormField from '@/components/BackendFormField'
 
+type BackendFieldValue = string | number | boolean | string[] | Record<string, string> | undefined
+
 interface BackendConfigurationProps {
   formData: CreateInstanceOptions
-  onBackendFieldChange: (key: string, value: any) => void
+  onBackendFieldChange: (key: string, value: BackendFieldValue) => void
   showAdvanced?: boolean
 }
 
@@ -26,7 +28,7 @@ const BackendConfiguration: React.FC<BackendConfigurationProps> = ({
         <BackendFormField
           key={fieldKey}
           fieldKey={fieldKey}
-          value={(formData.backend_options as any)?.[fieldKey]}
+          value={(formData.backend_options as Record<string, BackendFieldValue> | undefined)?.[fieldKey]}
           onChange={onBackendFieldChange}
         />
       ))}
@@ -41,7 +43,7 @@ const BackendConfiguration: React.FC<BackendConfigurationProps> = ({
               <BackendFormField
                 key={fieldKey}
                 fieldKey={fieldKey}
-                value={(formData.backend_options as any)?.[fieldKey]}
+                value={(formData.backend_options as Record<string, BackendFieldValue> | undefined)?.[fieldKey]}
                 onChange={onBackendFieldChange}
               />
             ))}
@@ -53,7 +55,7 @@ const BackendConfiguration: React.FC<BackendConfigurationProps> = ({
         <BackendFormField
           key="extra_args"
           fieldKey="extra_args"
-          value={(formData.backend_options as any)?.extra_args}
+          value={(formData.backend_options as Record<string, BackendFieldValue> | undefined)?.extra_args}
           onChange={onBackendFieldChange}
         />
       </div>
diff --git a/webui/src/contexts/__tests__/InstancesContext.test.tsx b/webui/src/contexts/__tests__/InstancesContext.test.tsx
index 1f99055..f35c49a 100644
--- a/webui/src/contexts/__tests__/InstancesContext.test.tsx
+++ b/webui/src/contexts/__tests__/InstancesContext.test.tsx
@@ -70,37 +70,37 @@ function TestComponent() {
 
       {/* Action buttons for testing with specific instances */}
       <button
-        onClick={() => createInstance("new-instance", { backend_type: BackendType.LLAMA_CPP, backend_options: { model: "test.gguf" } })}
+        onClick={() => void createInstance("new-instance", { backend_type: BackendType.LLAMA_CPP, backend_options: { model: "test.gguf" } })}
         data-testid="create-instance"
       >
         Create Instance
       </button>
       <button
-        onClick={() => updateInstance("instance1", { backend_type: BackendType.LLAMA_CPP, backend_options: { model: "updated.gguf" } })}
+        onClick={() => void updateInstance("instance1", { backend_type: BackendType.LLAMA_CPP, backend_options: { model: "updated.gguf" } })}
         data-testid="update-instance"
       >
         Update Instance
       </button>
       <button
-        onClick={() => startInstance("instance2")}
+        onClick={() => void startInstance("instance2")}
         data-testid="start-instance"
       >
         Start Instance2
       </button>
       <button
-        onClick={() => stopInstance("instance1")}
+        onClick={() => void stopInstance("instance1")}
         data-testid="stop-instance"
       >
         Stop Instance1
       </button>
       <button
-        onClick={() => restartInstance("instance1")}
+        onClick={() => void restartInstance("instance1")}
         data-testid="restart-instance"
       >
         Restart Instance1
       </button>
       <button
-        onClick={() => deleteInstance("instance2")}
+        onClick={() => void deleteInstance("instance2")}
         data-testid="delete-instance"
       >
         Delete Instance2
diff --git a/webui/tsconfig.node.json b/webui/tsconfig.node.json
index 099658c..c00b390 100644
--- a/webui/tsconfig.node.json
+++ b/webui/tsconfig.node.json
@@ -4,7 +4,8 @@
     "skipLibCheck": true,
     "module": "ESNext",
     "moduleResolution": "bundler",
-    "allowSyntheticDefaultImports": true
+    "allowSyntheticDefaultImports": true,
+    "types": ["node"]
   },
   "include": ["vite.config.ts"]
 }
\ No newline at end of file